Which term refers to the requirement that an advertisement for a secured loan must clearly explain?

The term that refers to the requirement that an advertisement for a secured loan must clearly explain is the terms of security. This is critical because consumers need to understand what exactly secures the loan they are applying for, such as the specific assets that serve as collateral. This transparency helps borrowers make informed decisions about the risks involved in taking the loan, as it outlines how their assets may be used to secure the loan and what could happen in the event of default. This regulation aligns with consumer protection laws aimed at ensuring that financial institutions provide clear and comprehensive information about loan terms, preventing misleading advertising that could lead borrowers to enter agreements without fully understanding the implications.

While the other choices address important aspects of secured loans, such as the total cost, collateral, and duration, the focus in advertising is specifically on the terms of security, as this directly explains the risk involved for the borrower with regard to their secured assets.